<!doctype html>
<meta charset="utf-8">
<title>REFERENCE: floats can be cleared with just height</title>
<style>
.a {
height: 20px;
}
.c {
border: solid 1px #000;
background: red;
height: 10px;
overflow: auto
}
</style>
<div class=a></div>
<div class=a></div>
<div class=c></div>
